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Middle School: 6th, 7th and 8th Grade
Science
Pressure 3
Solution
Q.1.
What force is needed on an area of 4m to produce a pressure of 16Pa?
16%
0.25N
30%
4N
41%
64N
12%
64Kg
Q.2.
The bottom of a box has dimensions 2m by 3m. What is the weight of the box to produce a pressure of 20Pa?
3%
4N
10%
26N
21%
100N
67%
120N
Q.3.
Box A has a weight of 20N. It is put on top of box B. These two boxes exert a pressure of 60Pa. The area box B covers is 3m . Find weight of box B.
9%
60N
18%
80N
38%
160N
35%
180N
Q.4.
A four legged table exerts a pressure of 8,000Pa on the ground. Each leg has an area of 0.01m . What is the weight of the table?
18%
32N
24%
80N
50%
320N
9%
320Kg
Q.5.
What has to happen to the force exerted if the area doubles but the pressure is unchanged?
27%
The force must decrease
35%
The force must double
31%
The force must increase
8%
The force must stay the same
Q.6.
The dimensions of a ski are 8cm x 150cm. What is the weight of a skier standing on 2 skis to produce a pressure of 2,500Pa?
8%
500N
50%
600N
19%
900N
23%
2,400N
Q.7.
A girl is wearing a trainer on one foot and a stiletto on the other! Which exerts the most pressure on the ground?
18%
Both the same
68%
Stiletto heel
9%
They don't exert a pressure
5%
Trainer
Q.8.
What has to happen to the force exerted over a fixed area if the pressure doubles?
9%
The force must decrease
55%
The force must double
36%
The force must increase
0%
The force must stay the same
Q.9.
What force is needed on an area of 5m to produce a pressure of 25Pa?
17%
5N
13%
20N
39%
30N
30%
125N
Q.10.
The bottom of a box has an area of 5m . What is the weight of the box to produce a pressure of 20Pa?
4%
4N
65%
100N
13%
4Kg
17%
100Kg
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